IRS Publication 1518-A – Running a business or working as a self-employed individual means juggling multiple tax deadlines throughout the year. Missing even one can trigger penalties, interest, and unnecessary stress. IRS Publication 1518-A (Rev. 12-2018), titled Tax Calendar Options for Businesses and Self-Employed, serves as your official guide to the IRS’s free electronic tools that make tracking federal tax due dates simple and accessible on any device.
Whether you file quarterly estimated taxes, employment taxes (Form 941), excise taxes, or information returns like 1099s, this publication shows you exactly how to customize, subscribe to, and integrate the IRS Tax Calendar into your workflow. Updated information remains available directly from IRS.gov as of 2026, making Pub 1518-A the go-to starting point for digital tax compliance.
What Is IRS Publication 1518-A?
Published by the Department of the Treasury, Internal Revenue Service (Catalog Number 66021N), Publication 1518-A is a concise one-page document that explains electronic access options for the official IRS Tax Calendar tailored to businesses and self-employed taxpayers.
It does not list every due date (those appear in the live online calendar and Publication 509, Tax Calendars), but it details how to view, filter, subscribe to, and download the calendar so you never miss a deadline again. The publication has remained the authoritative reference for these tools since its December 2018 revision and is still prominently listed on IRS.gov forms and publications pages in 2026.
Download it free here: IRS Publication 1518-A PDF (also available in Spanish as Publication 1518-A (SP)).
Key Features of the Electronic IRS Tax Calendar for Businesses
According to Publication 1518-A, the online IRS Tax Calendar offers powerful, user-friendly options designed specifically for small businesses, sole proprietors, partnerships, S corporations, and self-employed individuals:
- Multi-Device Access: View the calendar on your desktop, laptop, smartphone, or tablet—no special software required.
- English and Spanish Versions: Full support for both languages.
- Smart Filtering: Narrow due dates by:
- Monthly depositor
- Semiweekly depositor
- Excise tax events
- General business events
- Monthly Overviews: See every relevant due date for the current month at a glance.
- Quarterly Views: The live calendar organizes deadlines into First, Second, Third, and Fourth Quarter pages for easy navigation.
These features help you focus only on the deadlines that apply to your specific business structure and deposit schedule.
Subscribe, Download, and Get Reminders – Step-by-Step
Publication 1518-A highlights several ways to integrate tax dates into your daily routine:
- RSS Feed Email Reminders
Subscribe to receive automatic email alerts one or two weeks before any form or payment is due. - Calendar Program Integration
- Subscribe directly in Microsoft Outlook 2010, Outlook 2007, or Mac iCal.
- Download dates into Outlook 2003 or any compatible calendar app (Google Calendar, Apple Calendar, etc.).
- Mobile Sync
Works seamlessly with iPhone, iPad, and other smartphones so deadlines travel with you.
Pro Tip: Set reminders 2–3 weeks early to allow time for gathering documents or making electronic payments through IRS Direct Pay or your business tax account.
How to Access the IRS Tax Calendar in 2026?
- Go to IRS.gov.
- Type “Tax Calendar” in the search box.
- Click the result titled “Tax Calendar” under Businesses & Self-Employed (direct link often resolves to IRS.gov/businesses/small-businesses-self-employed/tax-calendar or IRS.gov/taxcalendar).
You can also reach quarterly breakdowns directly:
- First Quarter Tax Calendar
- Second Quarter Tax Calendar
- Third Quarter Tax Calendar
- Fourth Quarter Tax Calendar
The calendar links to the exact forms, instructions, and payment options for each deadline.
Why Every Business Owner and Self-Employed Professional Needs These Options?
- Avoid Penalties: Late filing or payment penalties for employment taxes (Form 941, 940) or estimated taxes can reach 5–25% quickly.
- Stay Organized: Filters eliminate clutter—see only your deposit schedule.
- Work From Anywhere: Mobile access and calendar sync fit modern remote and on-the-go businesses.
- Free and Official: No third-party apps or paid services required—the IRS provides everything.
Small businesses and self-employed taxpayers who use these tools report fewer missed deadlines and greater peace of mind during tax season.
Additional Trusted IRS Resources for Complete Tax Compliance
- Publication 509 (2025/2026) – Tax Calendars (comprehensive printed-style reference)
- Employment Tax Due Dates page
- Estimated Taxes for self-employed (Form 1040-ES)
- Business Tax Account – View your account, make payments, and track filings in one place
- e-File Options – Most business returns (1120, 1120-S, 1065, 941, 940, 1099 series) must be e-filed
All resources are updated regularly on IRS.gov.
Final Thoughts: Make 2026 Your Most Compliant Year Yet
IRS Publication 1518-A proves that staying on top of business and self-employment taxes doesn’t have to be complicated. By using the free electronic tax calendar options it describes, you can filter, subscribe, sync, and receive reminders for every critical deadline—right from your phone or computer.
Action Steps Today:
- Download Publication 1518-A.
- Visit the IRS Tax Calendar.
- Subscribe to RSS feeds or import dates into your calendar.
- Bookmark the page and set a recurring reminder to check quarterly updates.
Taking five minutes now can save you thousands in penalties later. For the most current due dates, always verify directly on IRS.gov, as tax laws and deadlines can be adjusted by legislation or IRS announcements.
Stay compliant, reduce stress, and focus on growing your business—with the official IRS tools outlined in Publication 1518-A.
Last verified: February 2026 using official IRS.gov sources.